baber/WOPTO huggingface dataset:
Patent GB-389611-A (GB)
Title: Projection screen
IPC: G03B21/60
Filed: 1932-01-19
Abstract: 389,611. Projection screens. SHIMIZU, T., 57, Komagome Sendagi-cho, Hongo-Ku, Tokio. Jan. 19, 1932, No. 1654. Convention date, Jan. 19, 1931. [Class 97 (i).] In a projection screen for daylight use which consists of a transparent material 1 formed on one face so as to present a large number of small lenticular surfaces 2 and, on the other face, blackened except for small transparent areas at or near the focal points of the lenticular surfaces, the blackened surface is produced by a film of photographic emulsion which is exposed through the screen surface to parallel rays of light and is then subjected to the process of development and chemical reversal. The backing thus produced may be copied by photo-lithographic processes when the front surface of the screen is of the same formation. The lenticular surface may be moulded or may be formed of two gratings of parallel cylindrical rods disposed at right-angles, in which case the back surface of each grating is blackened and provided with a system of parallel transparent lines. When the screen is used for transmitting projection, the back is provided with a translucent or light-diffusing material 6, Fig. 1. For reflecting screens, the focal plane 8 of the lenticular surface is slightly beyond the back of the screen, as shown in Fig. 2, and a coating 7 of silver or white material is applied. In both forms of screen the diffusing or reflecting layer may be in the form of small inclined surfaces.
Patent GB-487586-A (GB)
Title: Improvements in and relating to coin actuated amusement and vending apparatus
IPC: G07F17/32
Filed: 1938-01-19
Abstract: 487,586. Coin-freed apparatus. GORDON, D. A. Jan. 19, 1938, No. 1711. [Class 27] In a coin-freed amusement and vending machine, a coin may either be inserted directly to article-delivery mechanism to obtain an article, or may first be employed as a playing piece to be struck by a manually operable figure at a target. In the latter case, the coin 15 is inserted between a pair of spring-pressed plungers 16 which hold it in a position to be struck by a club 14 held by a pivotally mounted figure 13. Access to the plungers is provided by a compartment 9 open at the front. The figure is actuated by turning a hand-shaft 53 connected therewith by a counterweighted lever 51 and a link 50. If the user succeeds in passing the coin through a target opening 25 it frees the article-delivery apparatus ; otherwise it falls through an opening 22 to the compartment 9 and can be recovered. Delivery of articles stored in piles ; coin action, mechanical-connection and multiple coin.-The articles are stored in a pile 36 resting on a delivery drawer 6 normally locked by engagemerit of a catch 41 thereon with a detent arm 33<1> on a shaft 33. A roller 40 on the drawer is engageable with a releasing arm 31<1> on a sleeve 31 concentric with shaft 33. A coil inserted directly by way of a front slot, or passed through the target opening 25, falls into slots in sleeve 31 and shaft 33 so that when the drawer 6 is pulled out roller 40 turns releasing lever 31<1> and catch 33<1> together to free the drawer. The coin is supported in the slots in sleeve 31 and shaft 33 by an abutment 35 which may be located in such a position that several coins, piled on edge one above the other, are required to free the mechanism.
Patent GB-407503-A (GB)
Title: Improvements in vacuum pumps of the condensation or diffusion type
IPC: F04F9/00
Filed: 1933-01-19
Abstract: 407,503. High vacuum pumps. BURCH, C. R., 12, Derbyshire Lane, Stretford, BANCROFT, F. E., 19, Delaine Road, Withing- ton, Manchester, both in Lancashire, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Jan. 19, 1933, No. 1813. [Class 71.] A pump of the kind in which gas is evacuated by a downward annular jet of vapour formed by a cowl on an uptake tube from a boiler comprises a main outer vacuum-tight vessel 1 containing a series of jots each enclosed in a condenser tube 10. The tubes are secured between plates 11, 12, and an annular flange 14 forms a partition dividing the vessel into high and low vacuum ends. The vapour uptake tubes 4 are secured to the top plate 2 of the boiler, and pass through a shield plate 32. The condenser is removable with the upper part of the casing. Specification 346,293 is referred to.
Patent GB-836835-A (GB)
Title: Method of starting an internal combustion gas turbine engine
Inventor: COCKBURN DAVID MARK
IPC: F02C7/277
Filed: 1957-01-17
Abstract: 836,835. Gas turbine plant. DE HAVILLAND ENGINE CO. Ltd. Jan. 14, 1958 [Jan. 17, 1957], No. 1836/57. Class 110 (3). An auxiliary turbine for starting an internal combustion gas turbine is fed with decomposition products of hydrogen peroxide into which water is injected. The purpose is to reduce the temperature of these products. An axial flow compressor forming part of a gas turbine plant has an auxiliary starter turbine 17, Fig. 1, mounted in the centre body 11, connected to the compressor rotor 16 through a two-stage epicyclic reduction gearing 19 and a free wheel coupling 20. The coupling 20 comprises an axially movable sleeve 22 having dogs 23 which engage corresponding dogs on the shaft 21 and an internal quick-pitch thread. On rotation of the shaft 18, the inertia of the sleeve 22 causes it to move axially until the dogs engage. Working fluid is supplied to the turbine through a spat 25. The turbine exhausts through passages 26 into the compressor air intake. Working fluid is generated by forcing hydrogen peroxide and water from the reservoirs 30, 31, Fig. 2, by compressed air passing through a reducing valve 34 from a third reservoir 32. The hydrogen peroxide from the reservoir 30 passes through a catalyst pack 33 of known type where it is decomposed and the products fed to a mixing chamber 35 to which water is supplied by the reservoir 31. The working fluid then passes through a conduit 37 having a coupling 38 including an automatic shut-off valve, which is closed when the coupling is disengaged, to the turbine. The part 40 of the coupling is mounted on the engine casing. In a modification, the water and hydrogen peroxide reservoirs have individual supply pumps. The quantity of water injected is not greater than the amount that will leave the working fluid " dry " and at the same time reduce the working fluid temperature to below 300 ‹ C.
Patent GB-659616-A (GB)
Title: Process for the oxidative cracking of non-aromatic hydrocarbons
IPC: C07C4/02
Filed: 1949-01-24
Abstract: 659,616. Cracking gaseous mixtures. UNIVERSAL OIL PRODUCTS CO. Jan 24, 1949, No. 1857. Convention date, March 30, 1948. Drawings to Specification. [Class 55(ii)] ] To produce a gas suitable for distribution in city mains from propane, butane, and similar liquified petroleum gases containing at least two carbon atoms per molecule, separate streams of the gas and air or other gas containing over 20 per cent of oxygen by volume are heated to between 540‹ and 870 ‹C and intimately mixed in the proportion by weight of 10-35 of oxygen to 100 parts hydrocarbon, then discharged into a reaction zone in which partial combustion of part of the fuel provides heat for cracking a greater part to form hydrogen, methane, ethylene &c. the product gases being cooled by heat exchange with the incoming gas streams. The heat exchanger may be of alloy steel tubular construction, the mixing chamber of metal or refractory material and the insulated reaction zone of iron-free refractory with or without baffles or packing but maintaining a high degree of turbulence. Other heat transfer means such as checker work traversed alternately by the reaction products and the feed streams, moving beds of pebbles &c. or fluids such as steam may replace the tubular exchanger if adequate to yield a combustion efficiency, i.e. the ratio of heat absorbed by the cracking reactions to that generated by combustion, of at least 50 per cent. With a preheat temperature of 650‹-760‹C the reaction zone temperature reaches 870‹-1040‹C about “-1/3 of the length of the reaction zone from the mixer and rapidly falls to 700‹-820‹C at the entrance of the heat exchanger. The mixer may be less than 3 per cent of the reaction zone volume: pressures up to about 3.5 atmospheres may be employed and the residence time in the reaction zone of the order of .05 seconds. A mixture obtained in one example by a 97.8 per cent conversion of propane comprises H2 12.3, CH, 15.4, C2 H4 14.3 CO 9.0, CO, 2.4, N, 42.2 per cent. A graph and table correlating experimental data relating to a range of mixtures obtained from propane enable product gas density and calorific value to be ascertained corresponding to various ratios of oxygen in the feed stream and to combustion efficiencies. Specification 637,108 is referred to.
Patent GB-1081742-A (GB)
Title: New sulphur condensates and methods of preparation
IPC: C08G61/12
Filed: 1965-01-15
Abstract: Sulphur-containing condensates are obtained by condensing together a phenol and dithiolpolythioether with the liberation of hydrogen sulphide.  The dithiolpolythioether may have the formula HS(CH2S)nH, where n is from 2 to 7, and the phenol may be hydroxybenzene, metacresol, paracresol, ethylphenol, propylphenol, butylphenol or resorcinol.  When hydroxybenzene is used the product contains units of formula <FORM:1081742/C3/1> where n may be as above or may be up to 32; there may be from 1 to 6 units in the molecule. The condensation may be carried out at 45 DEG  to 180 DEG  C. and from 0.1 to 10% by weight of an aliphatic amine as a catalyst.  The condensation product may be hardened by heating with a substance which generates alkylene groups, e.g. hexamethylene tetramine. Examples are given.ALSO:Sulphur-containing condensates are obtained by condensing together a phenol and a dithiolpolythioether with the liberation of hydrogen sulphide.  The dithiolpolythioether may have the formula HS(CH2S)nH, where n is from 2 to 7, and the phenol may be hydroxybenzene, metacresol, paracresol, ethylphenol, propylphenol, butylphenol or resorcinol.  When hydroxybenzene is used the product contains units of formula <FORM:1081742/C2/1> where n may be as above or may be up to 32; there may be from 1 to 6 units in the molecule. The condensation may be carried out at 45 DEG  to 180 DEG  C. and from 0.1 to 10% by weight of an aliphatic amine as a catalyst.  The condensation product may be hardened by heating with a substance which generates alkylene groups, e.g. hexamethylene tetramine. Examples are given.
Patent GB-150607-A (GB)
Title: Improved atomizing installation for the diffusion or injection of purifying or disinfecting agents into the atmosphere of enclosed spaces
IPC: B05B15/40
Filed: 1920-01-21
Abstract: 150,607. Potter, W. Jan. 21, 1920. Air - pressure sprayers; spraying - machines; roses.-Apparatus for spraying disinfectant or the like in enclosed spaces, of the kind in which liquid disinfectant contained in a reservoir is forced through a system of distributing pipes by compressed air, is fitted between the storage reservoir 1 and the compressed air reservoir 8 with a constant-level tank 3 and a series of distributing pipes 5 each fitted with separate non- return and actuating valves. The tank 3 is fed from the reservoir 1 and the constant level is maintained by a ball valve or the like. Each pipe 5 leads from the tank 3 to a different part of the system and terminates in a suitable spraying nozzle. The non-return valve is introduced into the lateral run of each pipe underneath the tank 3. Each pipe 5 is connected to a pipe 7 in communication with the reservoir 8 and containing a valve inside the box 6 which is opened by operating a corresponding press button 9. By pressing any button, the corresponding non-return valve is closed and the liquid thus trapped in that pipe is delivered through the corresponding spraying-nozzle. The reservoir 8 may be fitted with a safety valve 10, gauge 11, and hand pump 19. The spraying-nozzle comprises one or more wire-gauze screens 12, an expansion chamber 15, and in some cases a disk 14 provided with fine holes or slits.
Patent GB-104175-A (GB)
Title: Improvements in Anti-skid Chains.
Inventor: HEINSIUS ALBERT JOHN
IPC: B60C27/12
Filed: 1917-02-08
Abstract: 104,175. Heinsius, A. J. Feb. 11, 1916, [Convention date]. Chain couplings.- A non-skid chain for wheel tyres is fitted with a special endlink F formed with a narrow slot 2 in which a flat link such as b on the other end of the chain may be locked as shown.
Patent GB-947801-A (GB)
Title: Improvements in or relating to envelopes
IPC: B65D27/30
Filed: 1961-01-17
Abstract: 947,801. Envelopes &c. L. A. JAROSH. Jan. 17, 1961, No. 1981/61. Heading B6A. An envelope has an aperture 28 in its front panel 12 smaller in size than a stamp 26. A letter is folded so that when the fold is positioned at the bottom of the envelope one free edge 20 terminates short of the top edge 21 of the envelope and passes across the aperture 28. When applied, the stamp 26 adheres to the envelope and both parts of the letter securing them all together so as to prevent unauthorized inspection of the contents. The aperture 28 is in a detachable panel 22 on which the date stamp is received and which can be torn off at perforations 24 for retention for record purposes.
Patent GB-1430582-A (GB)
Title: Preparation of fluorinated organic materials
IPC: C07D309/20
Filed: 1972-01-14
Abstract: 1430582 Fluorinated organic compounds R N HASZELDINE and R ROWLAND 5 April 1973 [14 Jan 1972] 1989/72 Heading C2C [Also in Division C3] Hexafluoropropene is inserted into a bond between hydrogen and aliphatic carbon in an organic material that is free of acetylenic or terminal olefinic unsaturation but contains one or more groups or substituents inert under the conditions of the reaction selected from amide, carboxyl, ester, aldehyde, ketone, hydroxy, ether, thioether, thiol, cyanide and halogen, by heating the hexafluoropropene with the organic compound at 160-350‹ C., 1-250 atm. pressure, in the absence of free oxygen containing gases and free-radical producing catalysts; a solvent may be present. The organic compound may be a polymer (see Division C3). Only one C 3 F 6  unit is inserted into a single C-H bond, but, although single insertion predominates, more than one unit may be inserted into a molecule, depending on nature of the molecule, reactant ratios and conditions. As the net result of the insertion, H is replaced by -CF 2 CFHCH 3  or -CF(CF 3 )(CF 2 H). Many of the products are liquid with low freezing point and good chemical and thermal stability which make useful dielectric liquids, non- corrosive heat exchange media and lubricants; products obtained from carboxylic acids are surface active. Products obtained from alcohols may be esterified with acrylic acid to give fluoroalkyl acrylates that may be converted to polymers useful for the surface treatment of textiles; thus prepared by insertion into an already fluorinated reactant are potential aerosol propellants, refrigerants, anaesthetics and intermediates for the preparation of fluoropolymers.
Patent GB-489042-A (GB)
Title: Improvements in fountain pens
IPC: B43K5/06
Filed: 1937-01-23
Abstract: 489,042. Fountain pens. SWEETSER, G. Jan. 23, 1937, No. 2035. [Class 146 (iii)] In a self-filling fountain pen of the type in which a piston 3 is movable between flanges on the piston rod 1 so that on outward movement air can be evacuated through the piston and apertured lower flange but on the inward stroke a vacuum is formed behind the piston, the vacuum being broken to permit ink to be drawn in when the piston enters an enlargement 15 in the bore of the barrel, the enlargement is only sufficient to provide a capillary flow of ink to the nib when the pen is in use; in addition, the upper end of the enlargement is bevelled so that the piston, which is slightly compressed in the main part of the bore, tends to move down into the enlargement independently of the upper flange to permit ink to flow into the reservoir through the piston, but is prevented from being forced back into contact with the upper flange by the inrush of ink. The piston is formed of cork or similar material and may be strengthened internally by a metal sleeve. The lower flange is formed with a conical extremity 8 serving to cut off the supply of ink to the nib when the rod is at the bottom of its stroke.
Patent GB-589973-A (GB)
Title: Improvements in and relating to the treatment of stockings and other knitted articles
IPC: D06C5/00
Filed: 1945-01-26
Abstract: <PICT:0589973/IV/1> Apparatus for preboarding stockings and other shaped textile articles of polyamide type resin, silk, or cellulose acetate, as described in Specification 589,967, is provided with means for supplying live steam to the pre-boarding chamber and one or more gas heaters for supplementing the heat of the live steam. Mounted above the pre - boarding chamber 16 is an electric motor 34 driving a fan 35 which forces heated air through a conduit 36 and through perforations in the faces of vertical channels at each side of the opening 32 through which forms carrying the articles enter the chamber 16.  Live steam is injected through one or more sprays 50. The steam and air leave the chamber 16 through perforations in two vertical channels, one on each side of the exit opening 32, to pass through a conduit 39 to a gas heater 40, and are recirculated by the fan 35.  Means may be provided for preheating the forms prior to their entry into the chamber 16; and gas or electrically-operated radiant heaters may be provided in the chamber 16.  Specification 458,550, [Group VIII], also is referred to.
Patent GB-371410-A (GB)
Title: Improvements in or relating to gas-operated machine guns
IPC: F41F1/08
Filed: 1931-01-22
Abstract: 371,410. Machine guns. BIRMING- HAM SMALL ARMS CO., Ltd., NORMAN, G., and WYKES, C. C., Armoury Road, Small Heath, Birmingham. Jan. 22, 1931, No. 2131. [Class 92 (ii).] Relates to double-barrelled gas-operated machine guns having independent breech mechanisms whereby the barrels 2 may be discharged either separately or together, and consists mainly in providing cartridge pans or drums 10 which are rotated step-by-step about horizontal transverse axes 9, preferably by separate feed mechanisms actuated by the to and fro movements of each breech-bolt 7 and serving to actuate the pan or drums through verticallymovable ratchet devices 16 during both forward and backward travel of the bolts. The invention is shown in plan in Fig. 3 applied to a double-barrelled gun of the Lewis type. The pan feeding-mechanisms, which are enclosed in casings 22 detachably mounted on each side of the common breech casing 1, each comprise a shaft 19 rocked to and fro by a projection on the breech-bolt engaging a cam groove 20 on the shaft. The shaft carries a pinion 18 engaging on each side thereof rack teeth on vertically moving members 16, 17 which carry the pawls 14, 15, Fig. 5, that engage the teeth 21 on the drums. Detachable pistol grips 30, which serve to retain the casings 22, also carry separate trigger-mechanisms for operating horizontally-movable sears 26.
Patent GB-1283934-A (GB)
Title: Improvements relating to metal ladders
Inventor: ENGLHARDT ROBERT ANTON
IPC: E06C7/08
Filed: 1970-01-16
Abstract: 1283934 Ladders INDAL CANADA Ltd 10 Dec 1970 [16 Jan 1970] 2138/70 Heading E1S A metal ladder has outer and, optionally inner longitudinal ribs 15, 16 along each stile, and tabs 24, 25 at the rung ends passed through slots in the stiles and crimped over. The rungs may be of parallelogram section, with the tabs being extensions of the two shorter sides, which are located by the ribs.
Patent GB-725424-A (GB)
Title: Heating and temperature regulating system for engine powered vehicles
IPC: B60H1/00
Filed: 1953-01-26
Abstract: 725,424. Heating vehicles. VAPOR HEATING CORPORATION. Jan. 26, 1953 [Feb. 7, 1952], No. 2228/53. Class 64 (2). [Also in Group XXIX] A heating and temperature-regulating system for an engine-powered vehicle has a heat radiating loop 33, 37 with its inlet and return connected respectively to discharge and return conduits 17, 20 connecting the engine jacket 14 and radiator 19 of a circulating-liquid enginecooling system, means for regulating the vehicle temperature comprising a fluid-pressureoperated control valve 25 at the junction of the discharge conduit and the inlet to the loop to progressively vary inversely the delivery of hot liquid to the radiator and the loop respectively, and means controlling the control valve comprising a thermostat 73 in the vehicle controlling an electrically operated pressurefluid supply valve 71 supplying pressure fluid to the control valve when energised. When the temperature is below a certain value, the mercury in the thermostat breaks the contacts 101, 102 shunting the solenoid 112 so that an armature opens a switch 104 to de-energise the solenoid 91 of the valve 71 and vent air from behind a spring-loaded piston operating the control valve 25 via an adjustable needle valve 72 and conduit 77. The valve 25 slowly moves to reduce the flow to the radiator and increase the flow to the loop. At the same time, a switch 105 is closed whereby a coil 116 heats the mercury in a thermometer 100 of the thermostat which closes the contacts 101, 102 again and re-energises the valve 71. to supply air to move the valve 25 in the opposite direction. Thus the switches cycle under control of the thermostat, the time of opening of the switch 104 being longer than its time of closing if the heater 116 dissipates heat quickly when the temperature is below normal.
Patent GB-1247141-A (GB)
Title: Improvements in and relating to strainer devices for downpipes
Inventor: HUPPERT MAX
IPC: F16B7/00
Filed: 1970-01-16
Abstract: 1,247,141. Strainers in the downpipes from roof gutters. M. HUPPERT. 16 Jan., 1970 [18 Jan., 1969; 15 July, 1969], No. 2250/70. Heading BID. Overflowing rainwater is prevented from causing damage to a downpipe 3 from a roof gutter, which pipe has a portion 1 provided with a strainer 6 (for collecting leaves and other refuse) and a wall-opening 5 which can be covered or uncovered by a sliding sleeve 11, by surrounding the outside of the pipe portion, beneath the opening, with an annular chamber 9 which communicates with the interior of the pipe portion via wall apertures 10. When the strainer is clogged, the water flows through the opening 5 into the annular chamber 9 and from there into the interior of the pipe portion below the strainer. When the amount of refuse accumulating on the strainer is such that it extends above the top edge of the opening 5, the incoming water rises in the pipe portion 1, emerges through corrugations 4 and flows down the outside of the pipe portion into annular chamber 9 and then via slots 10 into the interior of the pipe portion. In its lowest position, sliding sleeve 11 extends partially into chamber 9 and rests on radial pins 12. To uncover opening 5, sleeve 11 is released from resilient catch 13 and moved upwards. Longitudinal guides 16 facilitate the movement of sleeve 11.